iMac

apple’s-m4,-m4-pro,-and-m4-max-compared-to-past-generations,-and-to-each-other

Apple’s M4, M4 Pro, and M4 Max compared to past generations, and to each other

The M4 Max is also the only chip where memory bandwidth and RAM support changes between the low- and high-end versions. The low-end M4 Max offers 410GB/s of memory bandwidth, while the fully enabled M4 Max offers 546GB/s.

For completeness’ sake, there is a third version of the M4 that Apple ships, with nine CPU cores, 10 GPU cores, and 8GB of RAM. But the company is only shipping that version of the chip in M4 iPad Pros with 256GB or 512GB of storage, so we haven’t included it in the tables here.

Compared to the M2 and M3

CPU P/E-cores GPU cores RAM options Display support (including internal) Memory bandwidth
Apple M4 (low) 4/4 8 16/24GB Up to two 120GB/s
Apple M4 (high) 4/6 10 16/24/32GB Up to three 120GB/s
Apple M3 (high) 4/4 16 8/16/24GB Up to two 102.4GB/s
Apple M2 (high) 4/4 10 8/16/24GB Up to two 102.4GB/s

One interesting thing about the M4: This is the first time that the low-end Apple Silicon CPU has increased its maximum core count. The M1, M2, and M3 all used a 4+4 split that divided evenly between performance and efficiency cores, but the M4 can include six efficiency cores instead.

That’s not a game-changing development performance-wise (the “E” in “E-core” does not stand for “exciting”), but we’ve seen over and over again in chips from Apple, Intel, and others that adding more efficiency cores does meaningfully improve CPU performance in heavily multithreaded tasks.

CPU P/E-cores GPU cores RAM options Display support (including internal) Memory bandwidth
Apple M4 Pro (low) 8/4 16 24/48/64GB Up to three 273GB/s
Apple M4 Pro (high) 10/4 20 24/48/64GB Up to three 273GB/s
Apple M3 Pro (high) 6/6 18 18/36GB Up to three 153.6GB/s
Apple M2 Pro (high) 8/4 19 16/32GB Up to three 204.8GB/s

The M4 Pro is the most interesting year-over-year upgrade, though this says more about the M3 Pro than anything else. As we noted last year, it was a bit of an outlier, the only one of the M3-generation chips with fewer transistors than its predecessor. A small decrease in GPU cores and a large decrease in high-performance CPU cores explains most of the difference. The result was a very power-efficient chip, but also one that was more of a sidestep from the M2 Pro than a real upgrade.

Apple’s M4, M4 Pro, and M4 Max compared to past generations, and to each other Read More »

macos-15-sequoia:-the-ars-technica-review

macOS 15 Sequoia: The Ars Technica review

macOS 15 Sequoia: The Ars Technica review

Apple

The macOS 15 Sequoia update will inevitably be known as “the AI one” in retrospect, introducing, as it does, the first wave of “Apple Intelligence” features.

That’s funny because none of that stuff is actually ready for the 15.0 release that’s coming out today. A lot of it is coming “later this fall” in the 15.1 update, which Apple has been testing entirely separately from the 15.0 betas for weeks now. Some of it won’t be ready until after that—rumors say image generation won’t be ready until the end of the year—but in any case, none of it is ready for public consumption yet.

But the AI-free 15.0 release does give us a chance to evaluate all of the non-AI additions to macOS this year. Apple Intelligence is sucking up a lot of the media oxygen, but in most other ways, this is a typical 2020s-era macOS release, with one or two headliners, several quality-of-life tweaks, and some sparsely documented under-the-hood stuff that will subtly change how you experience the operating system.

The AI-free version of the operating system is also the one that all users of the remaining Intel Macs will be using, since all of the Apple Intelligence features require Apple Silicon. Most of the Intel Macs that ran last year’s Sonoma release will run Sequoia this year—the first time this has happened since 2019—but the difference between the same macOS version running on different CPUs will be wider than it has been. It’s a clear indicator that the Intel Mac era is drawing to a close, even if support hasn’t totally ended just yet.

macOS 15 Sequoia: The Ars Technica review Read More »